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Conclusions Strip with a porosity of 25%, when sintered at a temperature of 1200°C in hydrogen with a dewpoint of -30°C, is refined with respect to carbon and oxygen. At the lower sintering temperatures of 1000 and 1100°C, the carbon content is reduced to 0.03-0.02%; the quantity of not easily reducible oxides remains unaltered. With regard to the kinetics of grain growth, nonporous strip made from iron powder may be classed with steels which are coarse-grained by their prehistory.
Porosity substantially affects the value of coercivity. Each 2% of pores increases the coercivity approximately by 0.1 oersted.
If temperatures of 1200°C and above, with holding times of 2-3 hr are used for presintering, and temperatures of 900-1000°C for the final heat treatment of the nonporous strip, the magnetic properties of the strip can satisfy the requirements of GOST 3836-47 for low-carbon, electrical engineering thin sheet steel.
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∙ 14y ago
Wiki User
∙ 9y agoMolten material rises and erupts at the same time older rock on the ocean floor moves outward on both sides of the ridge. As material cools it forms a strip of solid rock in the center of the ridge.
Wiki User
∙ 9y agoMagnetic strips are commonly used on the backs of credit cards. They are also on other, similar items, such as some states' driver's licenses, identification cards, and store loyalty cards.
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How does magnetic stripes prove seafloor spreading?
ddd
Why do magnetic stripes appear on the seefloor?
The seafloor spreads apart, creating new rocks that record magnetic orientation. Small grains of magnetite on the volcanic basalt (ocean floor) have magnetic properties.
If you wanted to trace the creation of tectonic plates using magnetic bands of normal and reversed polarity your best place to measure the magnetic stripes would be?
I need help
What causes the magnetic striping noticed about the mid ocean ridges?
These "stripes" formed the pattern known as magnetic striping. ... They hypothesized that the magnetic striping was produced from the generation of magma at mid-ocean ridges during alternating periods of normal and reversed magnetism by the magnetic reversals of the Earth's magnetic field.
What are three types of seafloor spreading?
evidence from molten material evidence from magnetic stripes evidence from drilling samples
How do earths magnetic pole reversals provide evidence for plate tectonics?
Magnetic stripes can be seen as you move away from ocean ridges.
What do the magnetic stripes om the seafloor represent?
When Earth's magnetic poles have reversed themselves.
How does magnetic stripes prove seafloor spreading?
ddd
How do the parallel magnetic 'stripes' near mid-oceanic ridges form?
These stripes often called zebra stripes, due to the alternating colors of the original magnetometer readings. When the first observations were made, it is directly related to two processes geomagnetic reversals and seafloor spreading.
Instruments used to detect earth's magnetic stripes?
Magnetometer.
How does magnetic reversals provide evidence for seafloor spreading?
Because of the stripes at the sea floor which are magnetic minerals
How magnetic reversals provide evidence for sea floor spreading?
Because of the stripes at the sea floor which are magnetic minerals
How do magnetic stripes show Earth's history of magnetic fields?
As you move away from an ocean ridge, the rocks get older.
Magnetic stripes on the seafloor are caused in part by?
movement of ocean crust.
What Magnetic stripes on the seafloor are caused on part by?
movement of ocean crust.
What Magnetic stripes on the seafloor are caused in parts by?
movement of ocean crust.
How do the parallel magnetic striped near mid-ocean ridges form?
These stripes often called zebra stripes, due to the alternating colors of the original magnetometer readings. When the first observations were made, it is directly related to two processes geomagnetic reversals and seafloor spreading.
